With a number of recent Hollywood films representing intelligent machines as either hero or villain, the subject of Artificial Intelligence (AI) has attracted the imagination of the media and popular culture. On the practical engineering side, over the past decade humanity's age-old dream of developing intelligent machines has experienced rapid development. The prospect of expert systems being increasingly able to outperform humans in a growing set of disciplines has led to deep soul-searching concerning the evolving future of labor. Meanwhile, cognitive computing platforms such as IBM's Watson are demonstrating a powerful ability to support and guide humans in complex activities as diverse as oncology diagnostics, investment management, biomedical research, and even the introduction of novel culinary recipes as Chef Watson.